Description

Disperse Red 4 is a synthetic anthraquinone derivative dye belonging to the disperse dye class. It is valued for its ability to impart a bright, fast red color to synthetic hydrophobic fibers, particularly polyester and acetate. This product is essential for manufacturers in the textile and plastics industries seeking consistent, high-quality coloration. Our supply of Disperse Red 4 CAS NO 2379-90-0 is backed by stringent quality control to ensure batch-to-batch reliability for your production processes.

Application

Disperse Red 4 is primarily used as a coloring agent for synthetic materials. Its key applications include:

• Textile Dyeing: Primary application for dyeing polyester, acetate, and triacetate fibers and fabrics.
• Plastics Coloring: Used as a colorant for mass-coloration of hydrophobic plastics like polystyrene, polycarbonate, and certain polyolefins.
• Ink Formulation: A pigment source for specialty inks used in transfer printing and other industrial printing processes.
• Acrylic Fiber Dyeing: Suitable for dyeing modified acrylic fibers where disperse dyes are applicable.
• Research & Development: Serves as a standard or reference compound in analytical chemistry and dye research laboratories.

Basic Information

Product Name	Disperse Red 4
CAS No.	2379-90-0
Molecular Formula	C₁₅H₁₃N₃O₂
Molecular Weight	267.28 g/mol
Synonyms	1-Amino-2-phenoxy-4-hydroxyanthraquinone; C.I. 60755; Disperse Red 4B; Celliton Red G; Artisil Red G; C.I. Disperse Red 4; 1-Amino-4-hydroxy-2-phenoxyanthraquinone; Samaron Red G
EINECS	219-155-7

Quality Control

Our Disperse Red 4 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. Key parameters such as color strength, shade, purity, and dispersion properties are rigorously verified. A Certificate of Analysis (COA) detailing these results is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Dispersion Stability	Passes test

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.